You talked about choosing the right speaker What about The left one ?

I've worked as an E. Eng. for 22 years and have a passing knowledge of audio equipment, but of course am very familiar with the electrical aspects. This is an excellent resource - you are doing a good service here. There is so much misinformation online regarding these topics, and your content is very refreshing. Nicely done, subscribed.

Excellent content, valuable information and perfect delivery. Very clear and understandable. Thanks!

Dude, your audio series are some of the best I have seen. Well done

Thanks man! I've really learnt something there!

The Sheldon Cooper of the audio world. Thanks for the videos, great info.

Ayyyy! I was waiting for this video man! Thanks! :)

Great stuff Kyle! Love all your videos!

You're such a great person!!! Keep it up!!!

Thank you for this very informative video😊

Listening to your channel every now and then over whelmes me. Some times I feel like I know nothing about Audio engineering or even music production. I would really love to take a full time course on audio engineering, speaker designs and possibly music production

Another great, very helpful, video. We have a show(outdoor concert venue) coming up in mid June and I'm working my way through your AU videos. Many thanks.

I was introduced to active speakers with active crossovers in the early 70's, and I've never gone back. Being able to couple an extremely low impedance power amplifier directly to a voice coil with only some fraction of an ohm dampens the system to such an extent that they follow the source signal with a minimum of distortion.

your contents are amazing you just answered a question i have been struggling with. thanks

Often the HF driver has a different angle than the LF driver. Also, when the directive is "Here it is, make it work." move speakers around and even try turning them upside down if possible until it gets as good as you can get then EQ from there. Sometimes weird tricks work. Great video!

A really useful video.

I've been a performing musician for 43 years and a sound technician for 18 of those years. I performed in a club for the first time at age 17 in a band that included my two brothers. We learned to play together. We started out with very minimal and insufficient gear. Over time, we acquired gear and built a large, mismatched, under-amplified, sound system we really didn't know how to correctly use. Oh, we thought we did, but we didn't. Much of it, we'd acquired used. Our mics were a hodge podge of cheap, used relics. After about 15 years of gigging heavily in Virginia, North Carolina, and West Virginia, sometimes playing three 4 hour shows a week, we grew tired of carrying all that gear. We hired out our sound for the first time. Back then, there were many good small sound production companies for hire in our area. They were all very capable and we had great experiences with every one of the many we hired. One day, we hired an individual who was phenomenal. He made us sound better than we thought was possible. And he made a lasting impression on me personally. I didn't realize it then, but I was cocky at times because I thought I knew my way around all aspects of gigging because I had "paid my dues". This gentleman could have easily told me off and moved on when I insisted on using a cheap EV mic from their affordable line I had bought based solely on the brand name, ignorant of specs or anything else about the mic. But he didn't. I would tell him my monitor needed EQ adjustments. He'd try to accomodate me, but the mic was simply not a good vocal mic. One day, I failed to pack the mic and he used an SM58 instead. I was humbled. My world changed. I began asking him how he knew the SM58 was the better vocal mic and why he could get so much better sound than we ever did. I learned that he knew his gear inside and out and had built his system well and knew how to deploy it to accomodate different venues. There was no internet back then. I was hungry to learn what I didn't know and consumed every book and every tidbit of knowledge I could lay my hands on. A whole new world was opened up to me and I realized I only knew a fraction of what I so confidently thought I knew. I also learned that I can always gain knowledge from anyone in the field because there are many different approaches to the same goals. And I embraced the fact that I'll never stop learning. We finally grew tired of the bar scene and took a long break in 2007. After several years of working in a bluegrass band, then an acoustic duet, with a number of different sound systems and approaches, I now have a very compact but capable QSC system and I mix from the stage in our 3 piece cover band. Times have changed, and so have the types of venues available for gigging. In our area, there are almost no clubs any more, but many establishments called brewpubs that offer live music. But unlike the clubs and dance halls of years past, the proprietors typically have no knowledge of the infrastructure needs of a band. There is usually no stage. Often, tables need to be moved to squeeze the band into the building. The audience is almost in your lap not only while performing, but also during load in and setup. And, often, there is only one 10 or 15 amp outlet for the band. I've built and tweaked my system to meet these challenges. I'm almost 60 now, and although I move a bit slower, I still enjoy performing live and achieving a great sound at FOH and through my stage monitor. I still use a wedge to better hear and control the show. I use an ampless guitar rig. Our bass player is ampless as well and my brother plays electronic drums. They both use IEMs and have tablet based control of their own monitor mixes via wifi connected to my compact 16 channel digital mixer. I'm retired now and we're like children again, having a blast. I find your channel and a few others to be very professional and informative. And I've successfully applied knowledge I've learned here. Thank you for your work and your channel!

Excellent videos, thanks for all this great information. I was wondering if you can make a video on speaker crossovers. I am particularly interested in how to determine the total impedance and power handling of a crossover/speaker given the amount of drivers with their respective impedance and power handling. In other words, in a 3 way speaker you typically have a woofer, midrange driver and a tweeter. all connected to the crossover of which is rated at let's say 200w (rms) at 8 Homs. So how do we determine the wattage and impedance of the woofer, midrange driver and tweeter to be used so that the sum is 8 Homs at 200 watts (rms). ? I hope my question makes sense..lol Thanks in advance.

Great work again ! Cheers

This was super helpful. Thanks!

Hi Kyle, thanks for the awesome videos. I just wanted to confirm whether the sensitivity spec dB value is A weighted, thanks

Excellent explanation. it's little easy to understand every-body.

Great information

Great work and effort ❤

Great video!! :)

Thank you.

In my listening room/bedroom, sound quality always precedes aesthetics. My 2.1 setup definitely looks DIY, but I love it and it sounds incredible. I have a 3 tier wood rack with my caseless Gigabyte motherboard on top (SSD and power supply zip tied under neath it). Second rack is my BSR frequency equalizer/spectrum analyzer with no case and transformer relocated further from signal wires. Bottom rack is my Yamaha RX-530 with case and rear panel removed, upgraded heat sink and transformer also relocated away from any signal wires. My first order crossovers are attached to the back of my JBL Northridge II cabinets using the speaker terminals from spare AV receivers. Makes it super easy to switch out the coils and caps to play around with low pass filters, high pass filters and crossover frequencies 🤘🎧🎸🎵

Nice!

Please make video on 70v/100v Speaker system.

I know a lot about nothing lol. Seriously though It’s great you have clear concise dialect on all subjects audio. Even if some content is aimed at the noob, I still alway s find something new and useful when you speak✌️

Your End-GAME Speakers ?! World's First Granite Open Baffle Speakers from MACO Acoustic are Revelatory ! This changes everything....

Thanks again for another great vid. Im becoming a novice sound engineer!! jijijij

❤❤❤great info… my 10 k cost speakers only put out 83 db /1 watt etc…. Vary inefficient… so I have a 550 watt power amp at 4 ohms to solve this issue.. using a DB meter I get average spl of 85 …at 10 feet…

Hi @AudioUniversity , I'm first time building a speaker on my own. I have 100w 2.0 Apm that will power 50w/channel. for 3 way crossover i chosen: woofer - 40w mids - 15w tweeter - 15w all are 8ohms (i have option to go for 4ohms) What do you think, in total 60w for speakers is too much or how should i choose mids and tweeter power?

If you truly care about your speakers and want to get good speakers, learn the spec sheets. Or the important numbers, because there is no shortage. Good fidelity can be found in the specs. Similar specs mean similar speakers. That is if the numbers are honest. lol. And consider Pro Audio equipment for home use as an option. JBL. Kali, Presonus make some good items!

I konw this is an old post, but I find it interesting that if you use Excel to calculate out the log 10, you get 2.6 not 26

Bro, your killing it. Love the content

This guy is good

Its an excellent video but I have a question. Four types of parameters are used for speakers by the manufacturers in the speakers specififation sheet, these are Continuous Power (RMS power), AES power, Programme Power and Peak Power. Could you please tell me the relation between these parameters. Thanks.

What software did you use to simulate your acoustics?

For those formulas, what is the base of the logarithms? Is it 2 or 10?

How the 135 deg coverage pattern can cover 14 foot diameter kept at 8 foot height. I tried using D= 2 x (H-h) x tan(135/2). Where H is height of ceiling and h can be seating height or standing height of 48" and 62" respectively. I got the formula from AVIXA. Could you please help.

What about tube amps? They have less wattage (output), but can power my speakers without noticable distortion - when my monoblock amp have greater wattage but sound isn’t louder…

Hi Kyle, i have two Rockford Fosgate speakers with 1,500 Watts Rating for each speaker. What amplifier rating should I use to avoid burning out problem?

Why did you use log 10 for the sensitivity calculation and log 20 for the distant

5:07 Out of "theoretical" curiosity... Decibel is a unit used to measure the _intensity_ of a sound, *or* the _power level of an electrical signal._ Are Sensitivity and "Sound *Pressure* Level" (SPL) synonymous? More clearly, is it just to say that the sensitivity (a specific sound level measurement) is expressed in SPL dB, rather than Newton/cubic cm for instance or PSI or whatnot describing actual _pressure levels_ ? Something is missing which makes this a bit confusing (at least for me lol)..

Ok my room is a rectangle and it has brick walls with plaster on I don't know what speakers to get and have an amazing sound all over the room and decent sound outside my room

You provide useful information in this video, but I am left confused as to whether this is geared towards the home audio buyer, or the professional audio person (say, someone who needs to set up sound for a band.) Professional audio personnel may need to know max power, etc. But the home buyer typically doesn't care about these things since they are listening while seated quite closely to the speakers. And for the home audio enthusiast, where does listening come into play? You have completely left the decision making in the realm of specs (which many times are not available, at least in the completeness you've shown here.)

Just a little tip for u, I think ur mic could turn a bit more when recording, so the sound could have better loudness. Cuz when I'm watching ur content, I'll always have to turn the volume a bit higher for more sound. 👍

Can somebody explain how to cut the annoying sound of electricity into the sound systems? specially when you connect a lap top or a Deck?

He bud pls help me here. I have a QSC 4 ohms 2 channel 750 watts per channel and 1500 watts bridge. For my amp how many watts of speaker would be good for each channel thanks

Nominal dispersion: 90 x 50 degrees. Which is horizontal and vertical?

The three questions when buying speakers should be: 1. Do you need new speakers? Experiment with what you have, te result might surprise you. 2. Does upgrading on your budget give you a worthwhile improvement in sound? If not keep saving your money and do look at second hand options (that is always a good option to get better price/performance) 3. Can you try the speakers you might want to buy at home without (much) financial risk? If you cant, keep looking. Be aware that most speakers need a few 100 hours to sound there best. The trial period should be 30 days preferably. I consistently answer the furst two questions with no. And I keep using my ESL 57 😁 the same questions apply to every part of gear.

Are you sure it isn't 1/r^2 instead of 1/r law?

What about active speakers? 😆

Hahahaha